Patrick is off on holiday and Anna and Karen invite their artist friend Leslie to stay; when Patrick comes back, Nanny tells him about Leslie and he assumes it's a woman. S3 E6: A Man About The House
Patrick is disapproving of the type of boy with whom Anna is mixing and wants to encourage her to date clean-cut young Matthew Brockbank, whom he invites to dinner. S3 E5: The Suitable Suitor